Brake shoe



E. C. FOLSOM June 11, 1935.

BRAKE SHOE Filed March 17. 1934 X 21mm [midi 77%?07/2 AF' Q- v MomPatented June 11, 19

Y T S TES 2;0 ll4,27 8' I I BRA E SHOE \I Edward C. Folsom, Toledo,Ohio, assignor," mesne assignments, to The American Brake Shoe andFoundry Company Application March 1'7, 1934,. Serial No. 716,086

'1 claims. '(01. 188 -258) This invention relates to wrought metal rein-,forcement and assemblyfeatures;v

This invention hasutility when incorporated in metallic brake shoes,especially for wheels for rolling stock. As shown, there is keyanchoring of the metal back as a reinforcement for the shoe.. 7

Referring to the drawing: l Fig. l isa plan viewof the sheet metal strapback reinforcement for a brake shoe; Fig.2 is a section on the lineII-II, Fig. 1; Fig. 3 is a section on the line III-III, Fig. 1 Fig. 4.is a section on the line IV-IV, Fig. 1;

Fig; 5 is a side elevation of the back reinforcement of Fig. lshowingthe arch in section;

Fig. 6 is a medial longitudinal sectionthrough, the shoe; and

Fig. is a'plan View of the back of the shoe.

A sheet metal back is provided having genreinforcement, and atthismid-position 5 drop side and depressed marginal portions? of thegeneral extent of the depression 3 and in the same direction havemedially reverse throw or raised portions 33. These upward throw reverseportions 8 provide re-entrant portions 9 forming a narrowed region inwhich hook-over termini m of the arch may assemble therewith.

These hook-over portions it have riser por tions ll abutting thenarrowed portions 9 and have cross-over l2 therebetween. Thisreinforcement is thus of two portions. The sheet metal main back betweenthe drop sides I and the central. longitudinal depressions 3 hasparallel extending portions l3, M. It is thus. seen that there is ineffect a longitudinally extending medialreinforcement rib of thisdepression 3, ormarginally thereof there is a pair of Iongitudinallyextending ribs l3, l4.. It is noted that there is continuity of themetal for full ditionally strengthening dueto therein forcing rib 3,which rib has continuity past the arch l2 at the portionfi. establishesa ing through the openings 2.

Between these terminal transverse extent.

rigidity for this construction, especially at the mounting lug providedat the arch [2.

With this as the skeleton of wrought metal,

the cast of the brake shoe thereabout has gen- -eral body [5 with backextension It at the termini with projection H to effect the keyAdditionally,

OFF I L through the openings 5 there is flow body portion to keyingmass. [8 in the depression 3.

About the archriser portion l2 there is enveloping cast 19 from the bodymass of the shoe,

In this general structure there isprovision for a shoe of simple form"which may have chilled termini-16in the body l5 and thus provide astructure of substantial form.in maintaining its mounting and generalstructure even as undergoing extremes of wear and the hazards of tendingpast said lug and away from said lug 25. the major extentthereof, saiddepression exin opposite directions, said depression having f anchoropenings through which the body protrudes to overlap the edges of saidopening.

2. A brake shoe comprising a body, asheet metal back, and a mountinglug, there being a supplementaryreinforcement for the back past the lugincluding a depression medially. of the" back, longitudinally past saidlug, in opposite. directions, said back being raised on opposite sidesadjacent the lug.

3. A brake shoe comprising a body, a sheet metal back,.and amountinglug, said back hav-. ing termini and therebetween paralleldepression portions longitudinally of the back, .at least one ofsaiddepression portions being continuous past the lug, nopposite'directions, and said. back at the lug being imperforate in its4. A brake shoe comprising a body, a mount ing lug, anda sheet metalbackhaving medially thereof terminal and intermediate openings in alongitudinal series, and a central depression continuous past thelug inopposite directions becross section past the narrowed portion 8. This iswith absence of any cutout and involves adtween the terminal openings inwhich theintermediate openingsare located to serve as keying means forthe body as protruding therethrough to overlap the edges of saidopenings.

5. :A brake shoe comprising'a body, a sheet metal back, said back havinga central depression longitudinally of its extent and. medially of itsextent being marginally raised oppositely to the groove to provide anarrowed region, and a hook member arch at said narrowed region.

6. A brake shoe comprising a body, a sheet metal back, and a mountinglug, said back having medially of its extent terminal and intermediateopenings in a longitudinal series spaced from the lug, and a depressionbetween the terminal openings in which the intermediate openings arelocated, said body having key assembly with the back through saidterminal openings in providing thickened termini for the shoe,

said body through said intermediate openings,

pression overlapping the edges of said opening 7 means.

V 1 E. o. FOLSOM.

